baber/WOPTO huggingface dataset:
Patent GB-956026-A (GB)
Title: Improvements in or relating to drop arches for kilns
Inventor: SHARPLES ARTHUR GEORGE
IPC: F27D1/02
Filed: 1961-12-16
Abstract: 956,026. Drop arches for kilns. PRENTON BRICK & TILE CO. Ltd. Dec. 11, 1962 [Dec. 16, 1961], No. 45168/61. Heading F4B. A drop arch for a kiln comprises a plate-like member or members depending through a slot in the kiln roof and having means for engaging the roof of the kiln to support the drop arch. The arch is formed of slabs 10 of T cross-section, the head 10a of the T resting on ledges 11 at either side of the slot 12. The slot 12 and ledges 11 may be at the bottom of a channel 13 filled with heat insulating material. The slabs 10 may have vertical saw-cuts 14 and the clearance between the slabs and the slot 12 and between adjacent slabs is such as to allow for thermal expansion. The slabs 10 may be continued upwardly and provided with holes 15 to allow for easy removal. The head 10a of the T may be replaced by separate plates cemented or pinned to the slab 10.
Patent GB-1520796-A (GB)
Title: Mobile railway ballast maintenance machine
IPC: E01B27/10
Filed: 1975-10-31
Abstract: 1520796 Railway ballast maintenance machines FRANZ PLASSER BAHNBAUMASCHINEN-INDUSTRIE GmbH 31 Oct 1975 [10 Jan 1975] 45535/75 Heading E1G A mobile ballast maintenance machine has at least one endless excavator chain 4 which is guided transversely beneath the track 3 by a guide slidable on the track formation, which comprises at least two parts 14 adjustable relative to each other to enable the excavating width to be varied and a conveyor 23 for redistributing the ballast and which is movable transversely over the entire excavating width. The width of the chain can be increased by the addition of nine parts 14 into the chain guide cross member 7. The vertical and horizontal positions of the excavator 7 and the horizontal position of the conveyor 23 are controlled by hydraulic cylinders 16, (17), 25. The machine has three screens 10 and has deflector plates 40, 48, Fig. 5 to control the distribution of ballast /sand to the divided conveyor belts 23, 26. Waste material is carried away on another conveyor belt 13. For Figures see next column
Patent GB-1530010-A (GB)
Title: Highfrequency transistors
IPC: H01L21/265
Filed: 1976-11-05
Abstract: 1530010 Transistors SIEMENS AG 5 Nov 1976 [12 Feb 1976] 46045/76 Heading H1K The small effective emitter width 'd' of a highfrequency transistor is defined by the interface of the emitter region 25 and an active base portion 7, there being also a more highly doped inactive base portion 5 which serves to reduce the base bulk resistivity. In the embodiment the collector region of the transistor is formed by part of an n-type epitaxial layer 3 and an underlying n<SP>+</SP> buried layer 4 on a p-type substrate 2, contact to the collector region being provided at an n<SP>+</SP> surface area (not shown) laterally spaced from the part 3 by an inset oxide layer. The inactive p<SP>+</SP> base portion 5 is formed by diffusion, after which an oxide coating is provided thereon and an emitter window is opened in the oxide coating adjacent the inset oxide. The active p-type base portion 7 is ion implanted through the emitter window, after which the emitter region 25 is formed by diffusion or implantation through the same window.
Patent GB-1402257-A (GB)
Title: Vector magnetometer
IPC: G01R33/26
Filed: 1971-10-04
Abstract: 1402257 Rubidium magnetometers NATIONAL RESEARCH DEVELOPMENT CORP 20 Sept 1972 [4 Oct 1971] 46104/71 Heading G1N A rubidium magnetometer measures field strength and direction by using two orthogonal light beams. In Fig.1 a rubidium gas cell 2 is housed in a body 1 which also carries two sensor assemblies 3, 4. Each sensor comprises a rubidium lamp 5, a filter/polarizer/lens unit 6, a lens 8 and a photo-cell 7 or 7'. Helmholtz coils 9 and 11 surround the axis of cell 2, while coil 10 is normal to the cell. Suppose that the magnetic field F to be measured is in the direction of sensor 3; there will be no modulation of the output from photocell 7, but the signal from photo-cell 7' will be intensity modulated at the Lamor frequency. If the field magnitude changes the Lamor frequency will change, so that the signal from 7' measures field strength. This signal is used to control the current in coil 11 so that the magnetometer is self-oscillating in the usual manner. If the field direction has a component in the direction of sensor 4 the signal from photo-cell 7 becomes modulated, either anti-phase or in phase with that from photo-cell 7' depending on the polarity of the component. Such modulation is detected by phase sensitive detector 17, Fig.2, and is used to control a D.C. current in coil 9 to nullify the field component. If the field has a component along the cell 2, i.e. normal to Fig.1, a signal appears at photo-cell 7 which is in quadrature with that from 7', and this is detected at 16, Fig.2, and controls a D.C. current in coil 10. The device thus produces a Lamor output from 7', which is counted and which represents total field magnitude, and two outputs of different phase from detector 7 which represent field direction components and which also drive the coils 9 and 10.
Patent GB-1286472-A (GB)
Title: Hydraulic system
IPC: F15B11/20
Filed: 1969-09-19
Abstract: 1286472 Hydraulic systems ROCKWELL MFG CO 19 Sept 1969 [7 Nov 1968] 46314/69 Heading F1P An hydraulic system is sensitive to the pressure of a source 1 to control the operation of valves 9, 19 remotely situated in e. g. an underwater well. At a predetermined first pressure of the source 1 a valve operator 18 actuates the valve 19. During this operation pressure supply to the operator 8 of the valve 9 is prevented by a control valve 5. When the source pressure is increased to a predetermined higher value, an actuator 6, described and claimed in co-pending application 20800/72 (Div. F1), is moved to change over the valve 5. Thus valve 9 is operated. A line 10 having a throttle 11 relieves pressure in a chamber (31) of the actuator 6 when the valve 5 is in the position shown. The line 10 may be replaced by a line 12 having a check valve 13, whereby by changing the source pressure, a desired pressure may be obtained in the actuators chamber (31) thereby to influence the pressure at which the actuator 6 is subsequently actuated.
Patent GB-1320728-A (GB)
Title: Process for the growth of aluminium alkyls
IPC: C07F5/06
Filed: 1970-09-29
Abstract: 1320728 Aluminium alkyls CONTINENTAL OIL CO 29 Sept 1970 [29 Sept 1969 26 Nov 1969] 46351/70 Heading C2J A process for the growth of an aluminium alkyl by reaction with ethylene comprises reacting an aluminium alkyl with ethylene in the presence of a liquid comprising carbon monoxide, nitric oxide or a cyanide of the formula R-CN, in which R is hydrogen, alkyl, cycloalkyl, aryl or alkaryl, whereby a grown aluminium alkyl is produced and the simultaneous production of polymer and/or olefin is inhibited. Specified aluminium alkyls are aluminium triethyl, tripropyl, tributyl, diethylbutyl and ethylpropylbutyl. Specified cyanides are hydrogen cyanide, pentylcyanide, propylcyanide and benzyl cyanide.
Patent GB-1015574-A (GB)
Title: Improvements in or relating to transfer sheets
IPC: G03G13/30
Filed: 1962-12-10
Abstract: Compositions for use in making pressuresensitive transfer sheets (see Division D2) comprise:  (Example 1) ethylcellulose, mineral oil, oleic acid, black dyestuff and toluol; (Example 3) polyvinyl butyral, chlorinated polyphenyl resin, nigrosine, magnetic iron oxide and methanol; and (Example 4) styrene copolymer, beeswax, carbon black, graphite and petroleum naphtha.ALSO:A pressure-sensitive transfer sheet comprises a foundation sheet, a transferable colour-forming coating covering a portion of one surface of the sheet so as to leave marginal edge portions entirely free of the transfer coating, and a protecting coating superposed over the transfer coating, transferable therewith and extending on to the transfer-free marginal portions to cover the transfer layer completely and seal its edges.  The transfer coating comprises the residue of a volatile-solvent-applied layer of synthetic film-forming binder material and imaging material and is printed on to the foundation sheet as a layer including a volatile solvent, which is then evaporated off.  The foundation sheet may be of paper or of polyethylene terephthalate.  The imaging material may be a conventional hectographic dyestuff, a colour-forming colourless dye component or complementary chemical reagent, or a pigment that is sensible magnetically, electrically or optically, e.g. magnetic iron oxide, iron filings, iron powder, silver powder, carbon black, graphite or nigrosine.  It must be insoluble in the solvent used to apply the composition.  The binder may be methyl-cellulose, ethyl-cellulose, carboxymethyl-cellulose, cellulose acetate, polyvinyl acetate, vinyl chloridevinyl acetate copolymers, alcohol-soluble polyamides, chlorinated polyphenyls, rosin-maleic resins or styrene homopolymers and copolymers.  The transfer layer may also contain one or more oils, oily materials or waxes. Preferably, two oils are used of which one is and one is not a solvent for or soluble in the binder.  Examples are mineral oil and oleic acid or beeswax.  The protecting coating may be of wax and may be applied as a hot melt.  The transfer sheets of the invention can also be used in thermography and xerography.
Patent GB-1484185-A (GB)
Title: Apparatus for introducing a strip of paper cardboard or similar web material into a printing machine
IPC: B41F33/16
Filed: 1974-10-29
Abstract: 1484185 Automatic web feed control J BOBST & FILS S.A. 29 Oct 1974 [13 Nov 1973] 46728/74 Heading G3N In apparatus for feeding a web { of paper or cardboard} to a printing machine, the tension T 3  of the material fed to the machine, (not shown), is regulated as a function of the product of its coefficient of elasticity K and a desired specific elongation #l c . The coefficient of elasticity K is calculated by measuring the change in tension in the web caused when it is subjected to a pre-  determined amount of specific elongation (R 2 -R 1 )/R 1  rollers 4, 2 having slightly differing radii R 2 , R 1 , but being driven by motor M at the same angular velocity. The tension in the web between the rollers measured by unit 16 has subtracted from it the tension measured by unit 13 after delaying of the signal by a time corresponding to the transit time of web between units 13 and 16, in unit 17, the difference being multiplied in unit 19 by the inverse R 1 /(R 2 -R 1 ) of the corresponding specific elongation to derive the coefficient of elasticity K, which is itself multiplied in unit 37 by a signal from potentiometer 39 representing the desired elongation of the material to be fed to the printing machine; the signal possibly being modified in unit 38, comprising Zeners and resistances in the feedback path of an amplifier, see Fig. 4 (not shown), to allow for any non-linearities in the material tensionelongation characteristics; the resultant tension signal, after the possible addition of a component Tc being delayed in unit 42 by an amount equal to the web transit time to the printing machine and fed as a desired tension signal to amplifier 44 whose output drives motor 33 positioning a counterweight 31 on a lever 30 supporting the roller 29, wiper 34 of a variable resistance 35 being fixed to the counterweight to provide, in effect an actual tension signal Y for the amplifier, the value T min  corresponding to the tension prevailing when the counterweight is at position O. The angular position, and its rate of change, as detected by potentiometer 36 and tacho 46 are fed to PID calculator 27 providing a desired torque signal Mc to an armature current servo 9, 10, for the motor 6, whose field 7 is constantly excited. Delay unit 42 comprises a cascade, Fig. 5 (not shown) of transistor memories, the signal T' 3 c being passed through at a rate related to the web velocity V, and the distance L corresponding, at velocity V, to the desired delay. Use of the apparatus enables slight change in size of a printed format with respect to the circumference of an engraved rotary printer, by appropriate choice of the elongation.
Patent GB-1476838-A (GB)
Title: Multi-way rotary valve for a pressure medium
IPC: F03C1/04
Filed: 1975-11-12
Abstract: 1476838 Reciprocating motors I J CYPHELLY 12 Nov 1975 [12 Dec 1974] 56746/75 Heading F1A [Also in Division F2]  In a rotary disc distributer valve of the parent Specification the throttle determining the active position of the distributer plate 2 with respect to the distributer block 1 comprises a gap 33 formed between the face of a flange 16" attached to the distributer plate and a projection 34 on a cam 1' attached to the block 1. Thus as the gap 22, between the control face of the distributer plate and the block, increases or decreases the throttle gap 33 changes in opposition to maintain the axial position of the distributer plate. The valve is shown applied to a multi-piston hydraulic motor in which the domed heads of the pistons 41 engage in a cam track 40 which thus rotates and drives the distributer plate 2 via a shaft 16 integral with the flange 16".
Patent GB-1484352-A (GB)
Title: Detector for indicating mean direction of flow of a fluid for example wind
IPC: G01P13/02
Filed: 1975-01-06
Abstract: 1484352 Determining average wind R M J O K HAFNER 6 Jan 1975 [7 Jan 1974] 46756/76 Divided out of 1484351 Heading G1R The description is contained in the Specification of the Parent Application, but the claims relate to a detector indicating the mean direction of a fluidflow.
Patent GB-1515936-A (GB)
Title: Graft copolymer in polyamide polyolefin blends
IPC: C08L51/02
Filed: 1975-11-12
Abstract: 1515936 Nylon-polyethylene blends E I DU PONT DE NEMOURS & CO 12 Nov 1975 [13 Nov 1974] 46765/75 Headings C3R and C3M In polymer blends of 60 to 90 wt. per cent nylon 6, 66 or 66/6 and 40 to 10% polyethylene, the fine grain dispersion of the latter in the former is enhanced by incorporating 1À8 to 8À0 wt. per cent of a thermoplastic graft copolymer wherein the trunk is a copolymer of ethylene with a comonomer providing amino-reactive sites, e.g. maleic or itaconic acid or ester, to which side chains of polycaprolactam, containing an average of 5 to 30 units, are linked via amide or imide linkages. The free end of the grafts are desirably rendered inert, e.g. by forming mono-alkyl amide end groups.
Patent GB-1246138-A (GB)
Title: Power-assisted rack and pinion steering mechanism
Inventor: WARD BENJAMIN
IPC: B62D3/12
Filed: 1968-10-04
Abstract: 1,246,138. Power-assisted steering mechanism. BURMAN & SONS Ltd. 2 Oct., 1969 [4 Oct., 1968], No. 47192/68. Heading B7H. In power-assisted rack and pinion steering mechanism, a pair of pistons 15, 16 carried by the rack 10 or an extension thereof are slidable in a cylinder 12 having an internal partition 14 through which the rack 10 extends and on opposite sides of which the pistons 15, 16 are disposed, the cylinder 12 having a pair of ports 17, 18 on respective opposite sides of the partition 14 so that pressurized fluid can flow into the cylinder 12 on one side of the partition 14 as fluid flows out of the cylinder 12 on the other side of the partition 14. Part of the cylinder 12 is integral with a housing 13 for the pinion 11. The ends of the rack 10 are connected to respective tie rods 19, 20 and surrounded by flexible bellows 21, 22.
Patent GB-1020066-A (GB)
Title: A transfer process for the production of photographic images
IPC: G03C5/315
Filed: 1963-11-29
Abstract: 1,020,066. Transfer sheet materials and processes involving their use. AGFA A. G. Nov. 29, 1963 [Nov. 30, 1962], No. 47306/63. Heading G2C. Photographic images are produced by (i) subjecting an exposed silver halide emulsion layer which contains a tanning silver halide developer e.g. pyrocatechol to action of heat to develop and harden exposed areas of the emulsion (ii) contacting the emulsion at elevated temperature,during or after development, with a transfer material containing organic sulphur compounds which are capable of blackening silver halide at the elevated temperature and also containing one or more sulphonic acid hydraxides or organic hydrazo compounds which contain the group. and (iii) separating the contacted materials. Specified organic sulphur compounds are those of the formulae (a) wherein X is as alkyl, substituted or unsubstituted phenyl or heterocyclic radical, NH 2  which may be substituted by substituted or unsubstituted alkyl or aryl groups, or an ONH 4  group and W is H, alkyl, aryl or halogeno aralkyl e.g. isonicotinic acid thioamide, picolinic acid thioamide or N-4-methoxy phenyl thiourea. (b) where Y is hydrogen, alkyl, substituted or unsubstituted phenyl, aralkyl, cycloalkyl or acyl and Z is amino,alkyl aryl or -NH 1 NH 2  which itself may be substituted by alkyl or amino substituted by Y e.g. 4-(4-methoxy phenyl)-thiosemicarbazide (c) ethylene-diisothio-urea hydrochloride (d) 2- thiourazile and 2-thiohydantoin and (e) where A is H acyl, or carboxylalkyl and B is- -CH 2 COOH e.g. carboxymethylthiomalic acid. Specified sulphonic acid hydrazides and hydrazo compounds are (1) mono-, di-and triamino guanidine and compounds of formula:- and R is hydrogen or alkyl (ii) mono-or dihydrazides of aliphatic or aromatic mono-or polycarboxylic or-sulphonic acids e.g. salicylic acid hydrazide, glutaric malic, citric and mucic acid hydrazides and p-toluene sulphonic acid hydrazides (iii) aliphatic and cycloaliphatic hydrazines and (e) semicarbazides and the compounds under (b) above. The transfer material may have these compound impregnated therein or contained in a layer of binder on a paper support. Such binders are gelatin, starch derivatives, polyvinyl alcohol, polyvinyl acetate, polyvinyl pyrrolidone, cellulose derivatives, alginates and gallactomannanes: The emulsion may contain auxiliary non-tanning developers e.g. pyrazolid-3-ones. The transfer papers may contain moisteners e.g.triethylene glycol, glycerol, glycol, sorbitol sodium acetate or sodium sulphate.
Patent GB-473087-A (GB)
Abstract: 473,087. Lighting burners. YATES, H. J., DOLPHIN, J., RADIATION, Ltd., and HOWLETT & CO., Ltd., M. May 26, 1936, No. 14835. [Class 75 (iii)] In means for lighting the burners of gas-fires, cookers, &c. in which a pyrophoric igniter is actuated by a movement of the gas cock beyond the fully open position, a pivoted pawl m is provided on a barrel n, carried by the stem g of the cock f, for actuating the friction-wheel j and an arcuate - shaped cam u is formed, or mounted, on the cock body a to co-operavte with a pin v on the pawl for preventing repeated actuation of the igniter until after the cock has been returned to the closed or nearly closed position. On opening the cock, the pin v moves along the outer edge w of the cam to engage a lever o. During the continued movement of the cock beyond the fully open position against the action of springs p, r, gas is supplied to pilot jets s, t, the lever o is rotated by, and released from, the pawl m, and the pin v leaves the cam. The friction-wheel j is rapidly rotated by the return of the lever o by the spring p for igniting the jet s and thereby the jet t, which ignites the main burner. When released, the cock is returned by the spring r to the fully open position, thereby cutting off the jets s, t, and the pin v enters a gap y<1> in the cam so that the pawl m, is held clear of the lever o by the inner edge x of the cam. To release the pawl for further actuation of the lever o, the cock is rotated so that the pin v passes through a gap j clear of the edge x and the pawl is rotated by gravity or by the edge x<1> of the cam to a position in which the pin v can again ride over the outer edge w. The flint i is pressed against the wheel by a spring k engaging a thumb screw l.
Patent GB-1148222-A (GB)
Title: Improvements in or relating to lasers
IPC: H01S3/02
Filed: 1966-10-24
Abstract: 1,148,222. Lasers. SPECTRA-PHYSICS Inc. 24 Oct., 1966 [20 Dec., 1965], No. 47515/66. Heading H1C. In order to prevent misalignment of the reflectors of a laser resonant cavity due to varying amounts of heat flowing through the reflector support structure the reflector support is surrounded with a heat conducting member which by-passes the heat flow. In the arrangement of Figs. 8 and 9, a gas discharge tube 2 including the active medium is mounted on a support 19 between prism reflector 4 and a spherical concave reflector 5 maintained in spaced apart relationship by supports 4<SP>1</SP> and 51. The supports 4<SP>1</SP> and 5<SP>1</SP> are mounted on each end of an aluminium tube 7<SP>1</SP> on which the gas discharge tube is mounted by means of insulating support 19. In order to by-pass heat flow from the discharge tube 2 to tube 7<SP>1</SP> this latter tube is surrounded by an aluminium shield 7<SP>11</SP> made up of two halves 7a<SP>11</SP> and 7b<SP>11</SP> joined together by extrusions 11. A cylindrical layer of polyurethane from 12 is placed around tube 7<SP>1</SP> in order to trap the air in insulating gap 10 and prohibit transfer of heat by convection. Pins 16, spaced in quadrature near each end of the structure, are fixedly attached to tube 7<SP>1</SP> and extend radially through openings 17 and 18 in housing member 7a<SP>11</SP>, opening 18 being in the form of a slot to allow movement of the pins 16 rather than deformation of the reflector support. An air gap 21 is provided as shown into which air circulates and convects heat upward from the discharge tube 2. The support 7<SP>1</SP> and shield 7<SP>11</SP> may be in the form of two tubes of rectangular cross-section, Figs. 4, 5 (not shown), and in Figs. 6, 7 (not shown) the reflector supporting member 7<SP>1</SP> may be a solid beam member having a T- shaped cross-section which increases further the shielding effect of tube 7<SP>11</SP>. Fig. 10 shows a cross-section of another form of construction.
Patent GB-1080557-A (GB)
Title: Improvements in and relating to hydraulic presses
IPC: B21J9/12
Filed: 1964-11-23
Abstract: 1,080,557. Forging. E. RIBBACK. Nov. 23, 1964 [Nov. 21, 1963; Feb. 25, 1964], No. 47522/64. Heading B3H. [Also in Division B5] In an hydraulic press having forming cheeks 3 supported by the shorter arms 2 of levers pivoted at 1, the longer arms 4 of these levers enclose an operating piston 5 and cylinder 6. In one example (Fig. 1) four double-armed levers are pivoted on axes 1 (see Fig. 2, not shown), the levers being urged together by springs 11. The piston 5 carries rollers 9 which engage wedges 7 on the lever arms 4. The wedges on one pair of arms may be arranged further from the pivots than the wedges on the other pair, so that one pair of cheeks 3 may be used to deform the end of a tube into an " eight " whilst the other pair " folds " the tube (see Fig. 2, not shown). In another example (Fig. 3, not shown) the piston acts on the levers through pivoted linkage (14, 15).